A 12-year-old boy is examined at the doctor's office. His height is reported as 154 cm. His height in inches is. Round to two decimal places (hundredths place).

A. Insulin is rarely given intravenously except in acute hospital settings (e.g., DKA management) under strict monitoring. IV administration by a child at home is unsafe and inappropriate due to the risk of hypoglycemia, infection, and vascular complications. The chest is also not a recommended site for injections.

B. Subcutaneous injections are the preferred route for regular insulin administration at home. Insulin is absorbed more slowly from subcutaneous tissue, providing a steady onset of action and reducing the risk of rapid hypoglycemia. The outer thigh, abdomen, upper arms, and buttocks are common subcutaneous injection sites, with the outer thigh often recommended for self-injection in children due to accessibility and ease of rotation to prevent lipodystrophy.

C. Intramuscular injections are not recommended for routine insulin administration because absorption is faster and less predictable, increasing the risk of hypoglycemia. The abdomen is not a typical intramuscular injection site; IM insulin injections are generally avoided except in specific clinical settings under supervision.

D. Intradermal injections deliver medication into the dermis, not subcutaneous tissue. This route is used for allergy testing or tuberculosis screening, not for insulin administration, as it does not allow for proper absorption and therapeutic effect.

A. A BMI at or above the 90th percentile is generally considered overweight, not obese. Using the 90th percentile as a cutoff would overestimate the number of children classified as obese, potentially leading to unnecessary interventions. The 90th percentile does not align with established CDC guidelines for obesity screening in children.

B. According to CDC growth charts, a child is considered obese if their BMI is equal to or greater than the 95th percentile for age and sex. This classification is evidence-based and correlates with increased risk for cardiometabolic complications (type 2 diabetes, hypertension, dyslipidemia) and psychosocial issues such as low self-esteem and bullying. It serves as a key threshold for initiating clinical assessment and targeted interventions, including nutrition counseling, increased physical activity, and behavioral support.

C. A BMI at the 70th percentile is within the normal weight range for children of the same age and sex. Children in this percentile are not considered overweight or obese and typically do not require weight-related interventions beyond routine healthy lifestyle guidance. Labeling a child with a BMI at the 70th percentile as obese would be inaccurate and could contribute to unnecessary anxiety or inappropriate treatment.

D. A BMI between the 85th and 94th percentile is classified as overweight, not obese. This distinction is important because children who are overweight may benefit from preventive lifestyle interventions, whereas children at or above the 95th percentile may require more intensive assessment and management. Misclassifying overweight children as obese could lead to inappropriate labeling or interventions.